JPH0616625Y2 - Washing machine - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention relates to a washing machine provided with a means for supplying water for overflow rinsing above a washing tub.

(B) Conventional Technology An example of this type of washing machine is disclosed in Japanese Utility Model Publication No. 53-10577. In this rinsing method, tap water pushes away bubbles on the upper part of the washing tub to promote rinsing, but the rinsing of the detergent in the tub is not sufficient because tap water flows out as it is.

(C) Problems to be solved by the present invention The present invention is intended to substantially improve the rinsing effect under the upper water supply.

(D) Means for Solving Problems A washing machine of the present invention comprises a drainage port, a vertically adjustable overflow port, a washing tub provided with a motor-driven rotor, and a drainage channel connected to the drainage port and the overflow port. , A drain valve for opening and closing the drain port,
What is provided above the washing tub, and provided with a water supply means for continuously supplying water from above when rinsing overflow, and a timer means for intermittently opening the drain valve while reversing the motor when rinsing overflow. Is.

(E) Action At the same time as rinsing the overflow water to flush the bubbles on the water surface, the water is drained from the lower part of the tank into small pieces, and the tap water supplied from above is drained without immediate outflow. As a result, bubbles flow out in the tank and the detergent content of the water in the tank is diluted.

(F) Example Hereinafter, an example of a two-tub washing machine will be described with reference to the drawings. In FIG. 3, (1) is a resin tank arranged in the machine frame (2), which has a washing tub (3) and a dehydration receiving tub (4).
An overflow / drainage chamber (5) is recessed at one corner of the washing tub (3).
(6) is a control box arranged in the upper part of the machine casing (2), (7) is a rotary blade arranged in the center of the inner bottom of the washing tub (3),
(8) is a porous dehydration tank disposed in the dehydration receiving tank (4), (9) is a water supply box fixed to the control box (6) above the washing tank (3), and (10) is a dehydration tank It is a water supply pipe that can supply water to (8).

Reference numeral (11) is a washing motor for rotating the rotary blade (7) at a reduced speed by means of a pulley, a belt and a reduction gear, and (12) is a dehydration motor for rotating the dehydration tank (8) at a high speed.

(13) is a drain outlet that opens at the bottom of the overflow drainage chamber (5).
Continuing to (14), drainage from the dehydration receiving tank (4) side is also led to this drainage channel (14) through a check valve.

(15) and (16) are upper and lower partition plates that are closed while keeping the water flow through the opening of the overflow and drainage chamber (5) to the washing tub (3), and the lower partition plate (16) is the upper flange ( The overflow pipe (18) is provided on the upper and lower sides of the 17), and the upper partition plate (15) is provided with a sliding hole (20) for sliding the manual knob (19) up and down. A communication pipe (21) is vertically movably attached to the lower part of the overflow pipe (18), and an overflow hose (22) is movably attached to the upper part of the overflow pipe (18). The communication pipe (21) has a lower end opening communicating with the drainage port (13) and is urged downward by a spring (23) .The communication pipe (21) is made of rubber or the like at the lower part and closes the periphery of the drainage port (13). A drain valve (24) is provided. The overflow hose (22) is fixed to the manual knob (19), and the height position of the overflow port (25) at the upper end is adjusted by the knob (19).

(26) is a drain solenoid for pulling up the communication pipe (21) upward to open the drainage port (13) with the valve (24), and the plunger of the drainage solenoid (27) through the communication rod (27). 2
It is fixed to 1).

On the other hand, the control box (6) is the washing motor (11).
Timer knob (2 for manually setting the operating time of
8), a timer knob (29) for manually setting the operation time of the dehydration motor (12), drainage, or a selection knob for selecting water supply to the washing tub (3) or water supply to the dehydration tub (8) ( 30),
A switching knob (31) for switching between rinsing and overflow rinsing is provided for the rinsing method.

Next, the electric circuit will be described with reference to FIG.
The washing timer as a timer means is a washing timer motor (32), a main contact (33) that is turned on during a set operation time, an inversion contact (34) that controls an intermittent inversion cycle of the washing motor (11),
Drainage contact (35) that turns on for a short period of time during every operating time
Composed of and. The ON-OFF cycle of the main contact (33), the reversing contact (34) and the drain contact (35) is as shown in FIG.

Then, a washing timer motor (32) is connected in series to the main contact (33), and the motor (32) has a series circuit of a reversing contact (34) and a washing motor (11), a drain contact (35), Changeover switch (36) operated by rinsing selector knob and drain solenoid
It is connected in parallel with the series circuit of (26). Further, the drain solenoid (26) can be directly fed with power through a drain switch (37) which is turned on when the selection knob is adjusted to drain. In addition, (38) is a dehydration timer motor, (39)
Is the main contact point of the dehydration timer.

To explain the operation, first of all, the water supply work is a rinse switching knob.
Turn off the switch (36) according to rinsing (31)
Then, set the selection knob (30) to the "washing tub" and drain switch
(37) is turned off, the faucet is opened, and water is supplied from the water supply box (9). For drainage work, select drain (30) "drain"
Then, the drain switch (37) is turned on and the solenoid (26) is driven. The solenoid (26) pulls up the communication pipe (21) and the valve (24) against the spring (23) to open the drain port (13). For the washing or rinsing work, the changeover switch (36) is turned off, and the operating time by the washing timer is set by the knob (28). Then, the motor (11) intermittently rotates the rotary blade (7) left and right to generate a rotating water flow in the tank.

For the overflow rinsing work, set the changeover switch (36) to the ON state, set the operating time by the washing timer with the knob (28), open the faucet, and set the selection knob (30) to “wash tub”.
According to. Adjust the overflow level with the knob (19). The motor (11) intermittently rotates the rotary blades (7) left and right to generate a rotating water flow in the tank, but bubbles are pushed to the overflow port (26) by the supplied water on the water surface in the tank. At the same time, the solenoid (26) pulls up the valve (24) at an appropriate timing to open the drain port (13). Then, the water in the lower part of the tank escapes while the valve is open,
Water from the water supply box (9) collects for that amount. Therefore, in the tank, the bubbles flow out and at the same time, the detergent content in the water is appropriately diluted. When such drainage is performed in the vicinity of the rotary blade (7), it becomes a force to draw the laundry toward the rotary blade (7) during rotation,
Since the water is drained in the partitioned drainage chamber (5), it is unlikely that the laundry comes into strong contact with the rotor blades (7) and is damaged in some cases.

In addition, in order to prevent such a damage accident, O shown in FIG.
An N-OFF cycle can be adopted. this is,
The drain contact (35) is turned on when the reversing contact (34) is off (when the rotor (7) is stopped). Also, this ON cycle is not turned off twice each time the reversing cycle (34) is turned off, but turned off twice.
Each time, it may be turned off four times, and in short, it may be turned on while the motor (11) is stopped. When the operating time is set long, the drain contact (35) is turned off in the latter half of the operating time.
The FF state may be set.

Since the dehydration work is the same as the conventional example, the description is omitted. In addition, when the drain switch (37) is arbitrarily turned on to supply power to the solenoid (26) for draining, the timer motor (32) and the motor (11)
Switch to ensure that power cannot be supplied to the
A contact equivalent to the main contact (33) may be inserted in series with (36).

(G) Effect of the invention According to the present invention, both the outflow of bubbles on the water surface and the dilution of the detergent content of the tank water can be performed at the same time, facilitating the apparent and substantial rinsing work. It is possible to provide a washing machine that is extremely practical and has a shortened period.

[Brief description of drawings]

1 is an electric circuit diagram of a washing machine according to the present invention, FIG. 2 is a time chart of each contact, FIG. 3 is a front sectional view, and FIG. 4 is another embodiment of the time chart. (3) ... Washing tub, (5) ... Overflow and drainage chamber, (7) ... Rotary blade, (9) ... Water supply box (water supply means), (11) ... Washing motor, (13) ... Drainage port, (1
5) (16) ... Partition plate, (22) ... Overflow hose, (24) ... Drain valve, (2
5)… Overflow port, (34)… Inverting contact, (35)… Draining contact.

Claims (1)

[Scope of utility model registration request] 1. A washing tub provided with a drain outlet, a vertically adjustable overflow outlet, and a motor-driven rotary blade, a drain passage connected to the drain outlet and the overflow outlet, a drain valve for opening and closing the drain outlet, and the washing. A washing machine which is located above the tub and which is provided with a water supply means for continuously supplying water from above when rinsing overflow water, and a timer means for reversing the motor and intermittently opening the drain valve when rinsing overflow water.